Restore spelling to Wi-Fi.
Bug: 5163232

Change-Id: I80a8a56da0833b52d0c49834ab11b0fea2949735
diff --git a/res/values/strings.xml b/res/values/strings.xml
index d62d78b..6a1a6f1 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -647,7 +647,7 @@
     <!-- Search preloading options [CHAR LIMIT=20] -->
     <string-array name="pref_data_preload_choices">
         <item>Never</item>
-        <item>Only on WiFi</item>
+        <item>Only on Wi-Fi</item>
         <item>Always</item>
     </string-array>
     <!-- Do not translate -->